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Collaboration, License, and Other Agreements - Checkmate Narrative (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	May 31, 2022	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Acquired in-process research and development in connection with asset acquisition		$ 195.0	$ 0.0
Checkmate Pharmaceuticals, Inc.
Disaggregation of Revenue [Line Items]
Acquisition, consideration transferred	$ 250.0
Net assets	35.3
Acquired in-process research and development in connection with asset acquisition	$ 195.0